Racing Zero DB: Training & Racing Aluminium Wheels The aim was clear - to design a wheel with disc brakes, with the same soul of the original “Racing Zero”. Creating it wasn't easy, given the myth it referred to. Fulcrum believe they have succeeded, developing a design along the same lines as that of conventional brakes. The riding experience is the same and equally exhilarating until you come to the extreme rush at a hairpin bend. Specification Suitable for clincher and tubeless Axle: Thru axle 12 x 100mm / 12 x 142mm Disc brake system Rim details: Aluminium welded Profile depth: Front & Rear: 30mm Rim width: External 23.8mm Internal 19mm Tyre compatibility: 23-56mm Spokes: Front; 21 - Two-to-one (14 left - 7 right) Rear; 21 - Two-to-one (7 left - 14 right) Aero, straight pull, Aluminium Hubs: Front; Carbon body, aluminium oversize flange Rear; Aluminium, aluminium oversize flange Bearings: USB ceramic with adjustable cup and cone bearing system Target weight: 1590g Weight limit: 109kg (cyclist) Nipples: Aluminium Technologies 2-Way FitTM RDBTM Rim Dynamic Balance USBTM - Ceramic Ultra Smooth BearingsTM 2:1 Two-to-OneTM 2:1 Two-to-One Spoke RatioTM MoMagTM Anti-Rotation SystemTM F.I.C. Fulcrum Identification Card - 100% HANDMADE QUALITY Traceability AFS axle systemTM Wide Rim Tech Cup & Cone Carbon hubs High strength Aluminum Plasma freehub Oversize flange Monobloc hub for disc Specific nipple housing For more product information: https://prf.hn/click/camref:1100l3S37e/creativeref:1011l140395/destination:https%3A%2F%2Fwww.fulcrumwheels.com%2Fen%2Fwheels%2Froad-bike-wheels%2Fracing-zero-db